Inertia Matrix

Some articles on inertia matrix, inertia:

Inertia Tensor - Moment of Inertia Reference Frames - Inertia Ellipsoid
... The moment of inertia matrix in body-frame coordinates is a quadratic form that defines a surface in the body called the inertia ellipsoid ... Let be the inertia matrix relative to the center of mass aligned with the principal axes, then the surface or defines an ellipsoid in the body frame ... vector, then from the definition of the inertia matrix, where In is the moment of inertia of the body around the axis in the direction n ...
Inertia Tensor - Moment of Inertia Reference Frames
... The use of the inertia matrix in Newton's second law assumes its components are computed relative to axes parallel to the inertial frame and not relative to a body-fixed ... that as the body moves the components of the inertia matrix change with time ... In contrast, the components of the inertia matrix measured in a body-fixed frame are constant ...

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    George Bernard Shaw (1856–1950)